Oil and feed-water separator.



PATENTED FEB. 20, 1906.

G. R. DAVIDSON. OIL AND FEED WATER SEPARATOR.

T0 F 17 PUMP FROM FEED PUMP APPLIOATION FILED MAR. 9, 1905.

7'0 BO/LEH Witnesses nventor,

Rttomegs UNITED STATES PATENT OFFICE GEORGE R. DAVIDSON, or LENOX, MioHieAN;

.0". AND FEED-WATER sEPARAToR.

To all whom itmaly concern;

Be it known that I, GEORGE E. DAVIDSON, a citizen of the United States, residing at Lenox, in the county of Macomb and State of Michigan, have invented a new and useful Oil and Feed-Water Separator, of which the following is a specification.

This invention relates to devices of that class employed for the separation of oil and feed-water, and has for its principal object to provide a novel means for separating the oil from feed-water during the passage of the latter from the feed-pump to the boiler.

A further object of the invention is to construct a separator which may be connected in the pipe-line between the feed-pump and the boiler, the separator being of. sufficient volume to contain a comparatively large quantity of water and by diminishing the force of the current permitting the oil to sep arate from the water by gravity, the oil accumulating in a chamber at the upper portion of the separator and being withdrawn from time to time as may become necessary.

A still further object of the invention is to provide a separator in which the current of water is forced to travel througha comparatively narrow annular space within a se arating-chamber to permit the oil to rea ily separate therefrom,and, further, to provide a separating chamber having a float valve which at the beginning of operations will remain open to permit the escape of all air from the chamber and will remain closed so long as the latter is filled with liquid.

With these and other objects in view, as will more fully hereinafter a pear, the invention consists in certain'nove features of construction and arrangement of parts, hereinafter fully described, illustrated in the accompanying drawings, and .particularly pointed out in the appended claims, it being uiulerstood that various changes in the form, proportions, size, and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

The accompanying drawing illustrates in vertical section an oil-separator constructed in accordance withthe invention.

The separator is formed of a preferably cylindrical casing 10, having a closed bottomv and provided with an approximately dome' shaped ca united to the main casing by suitable b0 ts. The top of the cap is formed integral with a small cylindrical oil-chamber Specification of Letters Patent. Application filed March 9, 1905- Serial No. 249,292.

the o1 Patented Feb. 20, 1906.

12, the upper end of which is provided with a cap-piece 13, having an air-vent 14, and in said cap is a valve-seat 15 for the reception of a float-valve 16, that is connected to a suitable fioat 17.

Thewater from" the feedpump enters through-a pipe 18 near the lower end of the casing 10, and at the inner end of the pipe is a downwardly-directed elbow or nozzle 19 in order that the current of water. entering through the pipe may be forced downward 7 toward the bottom of the chamber.

Within the casing 10 is a funnel-shaped casing 20, the upper and larger end of which is of such diameter that a contracted annular space is formed between the funnel and the inner wall of the casing for the passage of the Water, so that the latter being compelled to travel in a com aratively thin stream, will more readily yie d up the oil which it carries,

the oil separating from the water by gravity and moving upward to the smaller chamber 12 at the top of the dome -shaped cap 11. The lower contracted end of the casing 20 extends down through the bottom of the casing 10 and is coupled to a T 22, the lower end of which is closed by a plug 23, which may be removed when necessary to clean the casing 20 of any accumulations. From the T egrtends a pipe 23,.le'ading to the boiler, and 1n said pipe is arranged a check-valve 24, which will close under boiler-pressure and prevent the outflow of water from the boiler to the separator. This pipe is also provided with a globe-valve 25, by'which the flow of water from the separator to the boilermay be con-' trolled.

' To the oil-collecting chamber 12 is conthrough the gradually-contracted annular space between the chambers 10 and 20, and as the liquid must travel over the edge of the casing 20in a comparatively thin stream, ample opportunity is afforded fonthe escape of the latter floating upward to the chamber 12 while the water, under feedpump pressure, passes downward through and 20, a small quantity of kerosene'or similar material maybe injected into the separator from time to time, and when necessary. the blow-ofl' cock 34 may be opened to remove the accumulations from the separator or to draw off all of its contents, and in any case direct communication between the feed and boiler may be established'by a valved by'pass 35, thus permitting repairs to the separator in case 0 accident thout stopping the supply of water'to the boiler.

In introducing, the kerosene the latter is. preferably fed in minute antities to the mad-pump and forced, toget er with the'water, through the pipe 18 to the'fseparator and in rising by gravity will come into contact with any'cylinderoil which ma have accumulated on the inner wall of t e se arator and will free the same therefrom, so that the cylinder-oil and kerosene may float to the top. The kerosenebein lightest willfloa-t on top of the cylinder-ofiand may overflow.

through a pipe 36, leading to the feed-pump,

in order that a continuous circulation of kerosene may be maintained. k Having thus described the invention, What, is claimed is 1. In a device of the class specified, a casing connected between the feed-pump and the boiler, a submerged deflector by which the water is directed toward the upper end of the casing in a thin annular stream, awateroutlet at or near the bottom of the casing, and means at the top of the casing for drawing oflthe accumulated oil. a r 2. Ina device of the class specified, a cas ing having an inlet at its lower portion for the liquid to be separated, a submerged conical deflector arranged within the casing and over.

the

the upper Wider edge of which the liquid must pass, and a water-outlet leading from the lower portion of said deflector, and means at the top of the casing for drawing ofi accumu- 3; The combination a casing having at-its lower portion a hquid-in1et,a submerged funnel-shaped deflector arranged 4. The combination with a casing having near its lower end an inlet for the liquid to be separated, said inlet having a downwardlyturned discharge-mouth, a submerged funnel- 'sha ed deflector arranged within the casing an having its widened inlet'mouth near the u per-portion of said casing, a water-disc arge near the lower end of said deflector, an upper oil-chamber formin an extension of.

the main casing, and to which the oil flows bygravity, a sight-glass for determining theguantlty of oil in said chamber, and means ordrawin off said oil.

5.. In, a evice of the class specified, a casing having at its upper end an airev'ent, a

float-valve'for closing said air-vent, an inlet arranged near the lower portion of the casing forthe entrance of the liquid to be separated, a submergeddeflector having a widened en trance-mouth and a contracted. dischargeopening, an oil-chamber arranged at the up-' per portion of the casing and throu h which i the oil flows by gravity, and means or drawin ofl the oil from said chamber.-

ntestimony that I claim the foregoingas my'own I -have hereto aflixed mysigna ture in the presence of two witnesses.

" GEORGE R. DAVIDSON.

Witnesses-z j i CHAS. SCHURKEY,

W R. DAVIDSON. 

